What this 3VM1 breaker delivers
The Siemens 3VM1080-4ED42-0AA0 is a 4-pole IEC frame 100 circuit breaker from the 3VM1 series, rated for 80 A continuous with a TM210 thermal-magnetic trip unit. The TM210 trip provides fixed overload protection at Ir = 80 A (non-adjustable) and a short-circuit pickup of Ii = 10 × In (800 A). That fixed magnetic threshold suits motor branch circuits or feeder applications where the inrush is predictable and you don't need a dial to tweak the instantaneous setting. This is a 4-pole breaker with the N conductor unprotected — meaning the neutral pole is switched but has no overcurrent protection element.
The nut keeper kit (included) retains the busbar or cable lug nuts during vibration — a detail that saves time on a panel build where you're torquing multiple breakers in a row. Packaged dimensions of 150 x 119 x 116 mm give you the envelope for gland-plate planning and busbar routing. The 4-pole footprint is wider than a 3-pole equivalent; verify fill factor against your enclosure's available DIN-rail length before laying out the row.
RoHS compliant since June 2012. This is typical for electrical contacts and solder joints; it does not affect normal operation or handling but must be declared for end-of-life recycling reporting in EU jurisdictions.